NeilArmstrong,thefirstmanevertosetfootonthemoon,isbestr...
问题详情：NeilArmstrong,thefirstmanevertosetfootonthemoon,isbestrememberedbyhiswords“That’sonesmallstepfor(a)man,onegiantleapforthemankind”.Once,inaninterviewwithhisson,hesaiditwasdifficulttowatchasc...